Incandescent-lamp wrapper



W. H. FAIRCHILD.

INCANDESCENT LAMP WRAPPER.

APPLICATION FILED APR. 13, 1918.

Patented Sept. 5, 1922.

Patented Sept. 5, 1922.

UNITED STATES WALTER H. FAIRCHILD, OF EVANSTON,

COMPANY, OF ANDERSON, NEW Y ILLINOIS, ASSIGNOR TO MID-WEST BOX ORR, ACORPORATION OF INDIANA.

INCANDESCENT LQKI WRAPPER.

Application filed April 1 To all whom it may pmwern:

Be it known that I, WALTER H. FAIR- CHILD, a citizen of the UnitedStates, and a resident ofEvanston, in the county of Cook and State ofIllinois, have invented certain new and useful Improvements inIncandescent-Lamp Wrappers, of which the following is a full, clear, andexact description.

The invention relates to wrappers which are more particularly adapted tocontain an electric incandescent lamp so that it will be protectedagainst breakage.

It is now common practice to employ tubular wrappers which are formed oflongitudinally corrugated straw board. In these wrappers, the resiliencyof the longitudinal corrugated tubular container has been relied upon toexert pressure against the portion of the lamp bulbjhaving the greatestdiameter, to hold the lamp and the wrapper against relative longitudinaldisplacement to keep the lamp protected by the wrapper. In practice, ithas been found that this resiliency alone cannot always ,be relieduponto hold the lamp in the carrier and one object of the present inventionis to provide an improved Wrapper in which provision is made forrestricting the margin of the wrapper disposed adjacent the glass tip onthe bulb so that that margin will he measurably .held against expansionby the bulb and to more securely keep the lamp in the wrapper.

A further object of the invention is to rovide an improved constructionand met od whereby wrappers will be connected together for conveniencein handling or loading them.

The invention consists in the several novel features hereinafter setforth and more particularly defined by claims at the conclu-.

sion hereoi.

In the drawings: Fig. 1 is a perspective'of a connected series ofwrappers embodying the invention, alamp being illustrated in one ofthem. Fig. 2 is, an inverted end view of one of the wrappers with a lamptherein.

The invention is illustrated as embodied in a series of wrappers, eachof which -is formed of a strip of straw board which is longitudinallycorrugated, as as 3, and has its ends lapped and secured together, as at4, to form a tube or complete tubular wrapper. The upper and lower endsof the wrapper independently formed tubular- 8, 1918. Serial No.229,225.

are open and the straw-board, which is the material usually used, issomewhat resilient so that by reason of the longitudinal corrugationsthe tubular wrapper can be expanded, as at 6, by the widest portion ofthe bulb of an incandescent lamp 7. It is desirable to restrict thetubular wrapper to prevent the lamp from being pushed downwardly throughthe wrapper so far that the glass tip, usually present on the bulb, willbe unprotected an for this purpose corrugated strips of paper 8 and 9are secured to the outside of the lower margin of each tubular wrapper,the inner faces of these strips bepreferably secured by a suitableagglutinant to the wrapper.

In packing lamps in these tubular wrappers, it has been found that thework may be expedited by feeding the wrappers in connected series to apacker or apacking machine. The corrugated tubes are first independentlyor individually formed and f0] the purpose of temporarily securing thewrappers together serially, the strips 8 and 9 are applied to thewrappers from long strips or webs and are continously secured on thelower margin of the sides of the wrapper respectively. When the wrappershave-been loaded, the continuous strips 8 and 9 can be easily severedbetween the tubes, 'so that the wrappers can be individually handled.

The invention exemplifies a wrapper which is individually formed ofcorrugated paper and is provided at one margin with a strip or stripsfixed thereto to restrict the expansion of that margin relatively tothat portion of the'wrapper designed toholdthe widest portion of thelamp. Also one in which the tubular corrugated wrappers are individuallyformed and are serially eonnected by means of strips which are utilisedto restrict the expansion of one marginal portion of the wrapper, theother marginal. portion being unrestricted so that the lamp can beinserted into it.

Whilst the invention has been'designated a lamp wrapper, it will beunderstood that it is usablefor other articles and more particularly inwrappers for articles which have ortions of different sizes, so thatexpansi- 1e and restricted portions are necessary. The invention is notto be understood restricted'to the details set forth, sinc% these may bemodified within the scope of the appended claims, without departing fromthe spirit and scope of the invention.

Having thus described the invention, what I claim as new and desire tosecure by Let ters Patent, is:

l. lneanclesrvnl lamp wrappers eompris ing a. series of imlepenilentlylornlerl longitudinally vorrnguted resilient tuhvs and :t sever-ableeontinuous eon]purutively narrow strip secured to one portion of saidtubes to temporarily hold them together serially and to restriet theexpansion of one end of each tube by the lamp bulbs.

52. Inrzuuleseent lamp wrappers comprising a series 01' independentlyformed longitudinally corrugated resilient tubes and continuous stripsoi paper secured to opposite sides of one portion of said tubes totempolal'lly hold them together serially and to restrict the expansionof one end of each tube by the lamp hnlhs.

WALTER H. FAIRCHILD.

